Provides that a person shall not be charged, subject to civil forfeiture, or otherwise prosecuted for a violation of chapter 69.50 RCW if: (1) The person was a witness to a drug overdose;

(2) The overdose resulted in an imminent threat to the health or life of the overdose victim;

(3) The person reported the drug overdose to law enforcement or summoned medical assistance at the time it was witnessed; and

(4) All evidence of the specific violation was gained as a result of the person's report.